Drilling-machine.



H. J. HARVEY.

DRILLING MACHINE.

APPLICATION FILED MAR. 1, 1909.

Patnted May 24 ANDREW a. GRAHA UNITED STATES PATENT OFFICE.

HENRY J. HARVEY, OF SEATTLE, WASHINGTON.

DRILLING-MACHINE.

To all whom it may concern:

Be it known that I, HENRY J. HARVEY, a citizen of the United States of America, and a resident of the city of Seattle, in the county of King and State of WVashington, have invented certain new and useful Improvements in Drilling-Machines, of which the following is a specification.

My invention relates to machines of the above type and resides in the provision of means of novel construction for imparting partial rotation to the drill between the strokes thereof.

\Vith the above and other objects in view, to be referred to, as my description progresses, my invention resides in the structural features, arrangements and combinations of parts hereinafter described and succinctly defined in my annexed claims.

Referring to the accompanying drawing, wherein like numerals of reference indicate like parts throughout: Figure 1 is a view in perspective of my invention in operative position, parts being broken away. Fig. 2 is a fragmentary view with parts broken away, illustrating the drill supporting frame in a relatively inverted position, to that illustrated in Fig. 1. Fig. 3 is a detail view of the ratchet member, the component sections thereof being separated, and Fig. 4c is a detail view of the removable collar, normally arranged on the drill for confining the recoil spring.

Reference numeral 1 indicates a suitable support, shown as comprising a frame consisting of spaced arms connected at one end and having a drill 2 slidably supported in their free end portions, as clearly shown in Fig. 1. Between the arms of frame 1, I slidably arrange on drill 2 a ratchet member 3 having a series of ratchet teeth 3 on each side or end face, the teeth of one series being offset or arranged out of alinement with those of the other series, for a purpose made apparent hereinafter. As now considered, ratchet member 3 is formed with a bore, angular in cross section, conforming to that of the drill (see Figs. 2 and 3) by which construction, both the drill and ratchet member are held for simultaneous rotation, while being free for independent sliding one on the other.

Reference numeral 4: indicates a shifter, comprising a lever, pivoted, as at 5, on frame 1 and having one end engaged in a ring 6, carried by ratchet member 3, for

Specification of Letters Patent.

Application filed March 1, 1909.

Patented May 24ft, 1910. Serial No. 480,788.

shifting ratchet member 3 on drill 2, to bring the series of teeth 3 into engagement with lugs 7, provided on the inner faces of the arms of frame 1, whereby partial rotation of the drill will be effected.

While other mechanism can be employed for shifting ratchet member 3, I have illustrated a form now preferred by me with a view of providing a machine which can be controlled by a single operator, the same comprising a flexible connection 8 passing over guide rollers 9 on frame 1, and being connected between said guide rollers to shifter 4, and having one end connected to a spring 10, secured to frame 1, and its other end secured to a suitable treadle 11, arranged in proximity to the rear end portion of drill 2, whereby, the operator after having struck the drill with his sledge, can operate treadle 11 with his foot,-which operation effects a forward shifting of ratchet member 3, during which movement by reason of one of the inclined faces of a ratchet tooth of the forward series 3 engaging the adjacent fixed lug 7, and the latter riding thereover, a slight rotary movement is imparted to said ratchet member and to the drill. When pressure is removed from treadle l1, spring 10 moves shifter 4 and the clutch member in the reverse direction, during which movement of the clutch member back to the position shown in Fig. 1, one of the teeth of the other series 3 is brought into engagement with the other frame lug 7, thereby causing a further rotation of the ratchet member and drill, and setting said ratchet member so that the next tooth of its forward series 3 will be in position for engagement with its frame lug 7 upon the next forward movement of the ratchet member.

Reference numeral 12 indicates a recoil spring confined between a removable collar or ring 13 and the forward side of frame 1, which collar or ring is formed to be capable of being removed from the forward end or hit (see Fig. l), of the drill.

In the present embodiment of my invention, I have shown drill 2 as being arranged for sliding in seats, let extending inwardly from one edge of the arms of frame 1, and having their outer or open end portions nor mally closed by members 15 pivoted, as at 15. To prevent accidental displacement of members 15*, I provide the same with catches, in the form of spring pressed slidable pins 15, adapted to engage in openings provided therefor in the walls of seats it, as clearly shown in Fig. 2. By this construction and arrangement of parts, drill 2 with all the parts carried thereby can be removed or inserted into position on frame 1, as an entirety.

To facilitate the removal of ratchet memher 3 from the drill, I form the same in longitudinal sections, one of which is con siderably larger than the other whereby comparatively broad oppositely disposed bearing surfaces for engagement with the drill can be provided on a single section, as will be readily understood by reference to Fig. 3.

The component sections of member 3 are provided on their free end portions with interlocking parts, there being tongues 3 provided on one section which are normally engaged in grooves 23* of the other section, whereby longitudinal movement of one section on the other is prevented. Ring 6 prevents accidental outward movement of these sections, the same being provided with set screws 15, mounted in lugs 15 thereof, which screws upon being adjusted inwardly will hold said sections in close relation and further secure said ring from lengthwise sliding on said ratchet member.

Ring 6 is provided with a tongue or lug 16, which engaging in a groove 16 of ratchet member 3, connects said ring and ratchet member for simultaneous rotation,

thereby relieving the set screws from strains in this connection.

In mounting support 1 for angular adjustment, I provide an arm 17 adjustably engaged on a post 18. On arm 17, a split clamp member 19 is arranged, the same being provided with an angular-1y disposed socket 19 in which a stem 20, to which support 1 is pivoted, as by a bolt 21, is rotatably engaged. Clamp member 19 is provided with a clamping bolt 22, the nut on which, when released, permits of said member being turned on arm 17, as will be readily understood. As now considered, socket 19 is pro vided with a split member 23 similar in construction to member 19, and formed integral therewith. A bolt, as 24, is provided in member 23 for holding stem 20 against rotation. Post 18 is formed of. telescoping sec tions, having registering openings 18 in which a pin 25 is adapted to engage for holding the sections, as adjusted. One of the sections of post 18 is provided with an adjustable point 26 for engagement with the roof of the chamber in which the device is arranged, and the other with a suitable foot piece or base 27. While the post as provided with the point 26 and foot piece or base 27, is intended primarily to be arranged vertically, it can however be arranged horizontally, as when working in a tunnel, and if desired, another point can be substituted for said foot piece or base, without departing from the spirit of my invention, as defined in my annexed claims.

Having thus fully described my invention, what I claim as new and desire to secure by Letters Patent of the United States, is:

1. In a drilling machine, a support, a drill supported for movement on said support, and means for imparting partial rotation to said drill including a ratchet member arranged thereon for simultaneous rotation and for independent sliding, said ratchet member being divided longitudinally, and a ring arranged on said ratchet member provided with set screws engaging the sections thereof.

2. In a drilling machine, a support, a drill supported thereon for sliding and for rotation, means for imparting partial rotation to said drill including a member formed on its end portions with series of ratchet teeth, said member being supported on said drill for independent sliding and for simultaneous rotation, a ring on said member, a shifter pivoted on said support and engaged with said ring for sliding said member on said drill, a spring for operating said shifter in one direction, a flexible means having connection with a treadle for operating said shifter against the tension of said spring in the reverse direction, and lugs on said support arranged on opposite sides of said member for engagement each with a respective series of ratchet teeth thereof for effecting partial rotation thereof during its sliding movement.

Signed at Seattle, Vashington this 20th day of February 1909.

HENRY J. HARVEY Witnesses A. A. Boorn, ARLITA ADAMS. 

